Warning box
alert();
Confirmation box
var message=confirm("你喜欢javascript吗");
if(message==true){
document.write("很好，加油");
}else{
document.write("js功能强大，要学习哦");
}Question Box
prompt("text","default value");
var myname=prompt(请输入你的姓名);
if(myname!=null){
alert("你好"+myname);
}else{
alert("你好我的朋友");
}The above JavaScript message box effect [implementation code] is all the content shared by the editor. I hope it can give you a reference, and I hope you will support Script Home.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
